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Yifan Zhai, M.D., Ph.D., Chief Medical Officer, has over 25 years of experience in cancer research and new drug development. For position with other members of the Group, Dr. Zhai is the director of Healthquest Pharma. Dr. Zhai was a postdoctoral fellow at the surgery branch, National Cancer Institute between 1993 and 1996. She also served as a scientist at Human Genome Sciences Inc., now GSK, between 1996 and 1999; senior research scientist at Bayer Pharmaceuticals Corp. between 1999 and 2001; director of the department of pharmacology at Exelixis Inc. between 2001 and 2003; President of HealthQuest Inc. between 2003 and 2005; and chief scientific officer at Oncomax Acquisition Corp. between 2005 and 2007. Dr. Zhai served as executive director of Anaborex (Shanghai) R&D Co., Ltd. between 2007 and 2008. She joined Celladon Corporation as chief scientific officer in 2007 until 2010 and joined Healthquest Pharma as president and chief executive officer. Dr. Zhai was the president of Chinese Biopharmaceutical Association-USA from 2009 to 2010.

Dr. Zhai is the author of more than 27 academic papers. She obtained her Medicine degree (M.D.) from Sun Yat-sen University of Medical Sciences (now renamed as the Sun Yat-sen University), and received her Ph.D. degree in Pharmacology and Toxicology from Michigan State University.